Why do you assume black magick is bad? Please don't call all black magick satanic, its not. Im a practitioner of black magick and I am not satanic. Now, on to your dillema. Yes black magick can be used to hex or curse someone. Perhaps you could use a sigil. Simply copy one, charge it, and hang it in your room or put it under your pillow. Or release it into the astral by burning it.

petrified wood is used to send back spells cast against you. I suggest also casting protection spells around your home. This will prevent future attacks. I agree Magick holds no color. Magick is a tool bent by the will and intent of the user. Therefore, the caster can have Light or Dark thoughts and intentions, but the Magick is not. Blessed Be. Allyx Malphas

I apologize. I'm new and it's nice to know. The reason i assume black magick is because it was used to harm someone bad. And the reason i think of something satanic is because i know he is a strong believer in satanism. I'm sorry. Always nice to know :)